Brain Shrinkage & Dementia, 3

Sometimes low B12 is related to a lack of appropriate digestion rather than to a low intake. Having said that, the use of B12 supplementation needs to be selected carefully. Some individuals have been taking B12 in a commonly available form known as cyanocobalamin, a reported derivative of cyanide (think Agatha Christie murder mysteries). According to Wikipedia, in the body this common synthetic form of cyanocobalamin is converted to the physiological forms methylcobalamin and adenosylcobalmin, leaving behind cyanide. A small concentration of cyanide, but cyanide nonetheless. It may be used as it is reportedly 100 times cheaper than the more desirable form: methylcobalamin. So it is important to read ingredient lists carefully. More tomorrow.